Formed polyimide article
    31.
    发明授权
    Formed polyimide article 失效
    形成聚酰亚胺制品

    公开(公告)号:US5374708A

    公开(公告)日:1994-12-20

    申请号:US741460

    申请日:1991-08-08

    摘要: Polyimide filaments and polyimide films having great strength, high elastic modulus and high crystallinity and comprising a novel polyimide which can be melt-processed without impairing high crystallinity and which essentially consists of recurring structural units represented by the formula (I): ##STR1## more than 85 mol % the polyimide consists of recurring structural units of the formula (II): ##STR2## and from 0.5 to 15 mol % of the polyimide consists of recurring structural units represented by the formula (III), the formula (II) exclusive, the formula (IV) and/or the formula (V).

    摘要翻译: PCT No.PCT / JP90 / 01679 Sec。 371日期1991年8月8日 102(e)日期1991年8月8日PCT 1990年12月21日PCT PCT。 出版物WO91 / 09900 日本1991年7月11日。具有强度高,弹性模量高,结晶度高的聚酰亚胺丝和聚酰亚胺膜,其包含可以熔融加工而不损害高结晶度的新型聚酰亚胺,并且其主要由式(10)表示的重复结构单元组成 I):(I)大于85mol%的聚酰亚胺由式(II)的重复结构单元组成:图像(II)和0.5至15mol%的聚酰亚胺由代表性的重复结构单元组成 通式(III),式(II)排除,式(IV)和/或式(V)。

    Readily processable polyimide and preparation process of same
    33.
    发明授权
    Readily processable polyimide and preparation process of same 失效
    易于加工的聚酰亚胺及其制备方法相同

    公开(公告)号:US5268447A

    公开(公告)日:1993-12-07

    申请号:US914015

    申请日:1992-07-15

    IPC分类号: C08G73/10 C08G69/26

    CPC分类号: C08G73/1071

    摘要: A readily melt processable polyimide obtained by reacting diamine represented by the formula: 4,4' ##STR1## wherein n is an integer of 1 or 2, with 3,3'4,4' -diphenylethertetracarboxylic dianhydride and/or 4,4' -(p-phenylenedioxy)diphthalic dianhydride or a mixture of these tetracarboxylic acid dianhydrides and pyromellitic dianhydride in the presence of phthalic anhydride.

    摘要翻译: 一种容易熔融加工的聚酰亚胺,其通过使由下式表示的二胺与4,4'-二苯基醚四羧酸二酐和/或4,4'-二苯基四羧酸二酐反应得到,其中n为1或2的整数, - (对亚苯基二氧基)二邻苯二甲酸二酐或这些四羧酸二酐和均苯四甲酸二酐在邻苯二甲酸酐存在下的混合物。

    Liquid crystal polyamide-imide copolymer
    34.
    发明授权
    Liquid crystal polyamide-imide copolymer 失效
    液晶聚酰胺 - 酰亚胺共聚物

    公开(公告)号:US5821319A

    公开(公告)日:1998-10-13

    申请号:US627037

    申请日:1996-04-03

    摘要: A sliding material and a heat resistant filament which primarily comprises a liquid crystal polyimide, a liquid crystal polyamide or a liquid crystal polyamide-imide copolymer having at least one recurring structural unit selected from the formula (1) and the formula (2) and is excellent in heat resistance, mechanical characteristics and other fundamental properties of polyimides, and relates to significant improvement of heat-resistance by heat-treating the sliding material, the filament and the molded items. The liquid crystal polyamide-imide copolymer which comprises in a polymer molecule 0.05.about.0.95 mole ratio of the recurring structural units of the formula (1) and 0.95.about.0.05 mole ratio of recurring structural units of the formula (2) has excellent processing ability ##STR1##

    摘要翻译: 一种滑动材料和耐热丝,其主要包括具有至少一个选自式(1)和式(2)的重复结构单元的液晶聚酰亚胺,液晶聚酰胺或液晶聚酰胺 - 酰亚胺共聚物,并且是 聚酰亚胺的耐热性,机械特性和其它基本性能优异,并且涉及通过热处理滑动材料,长丝和模制品而显着提高耐热性。 在聚合物分子中含有式(1)的重复结构单元的0.05分子量分数0.95摩尔比和式(2)的重复结构单元的0.95摩尔比的液晶聚酰胺 - 酰亚胺共聚物具有优异的加工能力, (1) (2)

    Polymide
    39.
    发明授权
    Polymide 失效
    聚酰亚胺

    公开(公告)号:US5196506A

    公开(公告)日:1993-03-23

    申请号:US914016

    申请日:1992-07-15

    IPC分类号: C08G73/10 H01L23/29

    摘要: A polyimide having a high heat-resistance good processability and recurring structural units of the formula (I): ##STR1## wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having at least two carbon atoms, alicyclic radical, monocyclic aromatic radical, fused polycyclic aromatic radical and polycyclic aromatic radical bonded through a direct bond or a bridge member.

    摘要翻译: 具有高耐热性良好加工性的聚酰亚胺和式(I)的重复结构单元:其中R是选自以下的四价基团:至少具有至少 两个碳原子,脂环族基团,单环芳族基团,稠合多环芳族基团和多环芳族基团通过直接键或桥连接键合。